Machine for drilling or the like irregular surfaces.



A. EINIGHER. MACHINE POR DEILLING 0R. THE LIKE IRRBGULAR SURFACBS. APPLIOATION FILED AUG. 2s, 1912.

UNITED sTATEs PATENT oEEIcE.

ANTON'V EINICHEB, OF BUDAPEST, AUSTRIA-HUNGARY, ASBIGNOR '10 THE FIRM 0F WAFFEN UND MASCHINENFAIBRIKS AUSTRIA-HUNGARY.

ACTIENGESELLSCHAFT, 0F BUDAPEST,

Specification of Letters Patent.

Patented Mar. 25, 1913.

Application led August 28, 1912. Serial No. 717,558. f

4impressions distributed either over the whole surface of the trunk or the like or merely over a certain portion thereof.

One of the objects of thus working the y wood is to facilitate the entering of dyeing or impregnating substances and the like, but the subject matter of the application may be used for other urposes.

The gist of t e invention resides 1n`forc ing a number of tools, such as 1nc1s1on tools or the like automatically against,- and into the piece of wood to be treated, which 1s screwed fast, as usual; then withdrawing the tools, feeding the wood forward, letting the tools repeat their action, withdrawmg them again, feeding the piece in work farther forward, and so 011 until the whole length to be treated is finished.

The incisions, holes or the like, produced in the manner just in general stated are all of the same depth, also if the piece of work has an irregular section or if its surface is irregularly shaped, that is to say, the distance between the surface of the wood and the bottom of the holes is always the same,

4 irrespective of how the piece of wood may be shaped.

In order to make my invention more clear, I refer to the accompanying drawing, 1n which similar letters denote similar parts throughout the several views, and in which:

Figure 1 is a sectional front view of my improved machine, Fig. 2 is a vertical section` through the starting device, Fig. 3 is a section through this device in line A-B of Fig. 2, and Fig. 4 is a plan of this device.

The piece of wood to be treated is supported upon a table 48 and fastened to the same. The tools 50, which are for instance,v quickly rotating nails or drills, are arranged singly or in groups or sets (the drawing, for the sake of simplicity, shows one such tool only) and they are moved against and away from the piece of work in a manner whichv is full described hereinafter.

The tools are riven from pulleys 17, 19

` and 20 through shaftin s 21 and 4 by means 'of bevel wheels 22 an 23. The tools are attached'to tool holders or slides 2 moving in guides 51. Each guide 51 contains, besidesthe respective holder or slide, another slide 3,i moved up and down by an axle 27, a crank disk 6, and a connecting rod 7, the extent of this movement being somewhatgreater than the depth of the holes to be produced. This movement of the slide 3 is transmitted to the tool holder 2, as is also more fully described hereinafter.

The operation of the machine is such that first the tool holder 2v with -its tools is depressed. whereby holes are formed in the piece of work l. The tool holder then rises again and the piece 1 is fed forwardfor a certain distance so that another part of its surface is in position to be worked. Now, another series of holes is produced, and so the work is continued as long as necessary. All movements requisite for this succession of actions are brought about by means of a hand lever and are automatically continued and transmitted by the machine itself.

The machine is driven from a shaft 18 having a cogwheel 24 meshing with cogwheels 25, 26, which are constantly rotated from said shaft. The cogwheels 25,26 have, besides -their external gears also internal gears 39, 47 and they sit loosely upon their axles 27, 28. After the maclune has been started, first a disk 36 keyed to the axle 27 is coupled with the cogwheel 25 and the rotary motion of the latter is thus transmitted to the shaft 27, which now makes one revolution, thereby causing the tools to make one stroke; The disk 36 is then uncoupled from the cogwheel 25 and a disk 44 keyed to the shaft 28 is coupled with the cogwheel 26, whereby the shaft`28 is rotated and shifts the workin table for a certain length. This is effected y the threaded engagement of the shaft and the foot of the table.

The disks 36 and 44 coperate with a hand lever 30 fulerumed at 29 and being under the pressure of a spring 31, which constantly tends to force the lever back into its former position after it has been moved in the direction to the disk 44. The

arrow A, Fig. 2, indicates this direction.

`gearing of the eogwheel 25 so that thereby the rotation of the disk 36 is transmitted to this cogwheel. Before, however, the disk 36 has made one complete revolution, a lug 40 forming part of the disk 36 pushes upon a lever 41 located upon the axle 29, and a projection 42 ofthis lever having held up to then a leg 43 of a bellcrank lever 43-45 leaves said leg. The bellcrank lever ,43--45 has its bearing at the boss of the disk 44; its leg/45 is also under .the pressure of a spring 46, similar to the leg 38 of the bellcrank lever 35-38, and owing to said spring 46 the leg 45 is pressed into 'the interior gearing 47 of the cogwheel 26 whereby the rotation of the disk 44 is transmitted to this cogwheel, as well as to the shaft 28. Shortly after the action of the lug 40, the leg 35 pushes upon the pawl 34 whereby the leg 38 is moved olf the gearing 39 thus causing the disk 36 and the shaft 27 to cease rotating.

Before the disk 44 has made one complete rotation, a lug 48 forming part of it pushes upon the endpiece 49 of the bellcrank lever 34, whereby the leg 35 of the 'bellcrank lever 35-38 is released. Thus,

the cogwheel 25 is again coupled to the disk 36 and the train of movements before described is repeated. Instantly thereafter, the lug 42 of the lever 41 pushes upon the leg 43 and releases the leg 45 from the gearing 47, causing thus the disk 44 and the shaft 28 to cease rotating. Therefore, as long as the hand lever 30 remains in the position shown, e. the position of rest, and

' as long as the pawl 32 of said lever is not s lever is moved o in contact with the leg 35, the axle 27 will make one complete rotation, then stop, then the axle 28 will make one complete rotation, then stop; after this the axle 27 will make another rotation and so on the times of rotation and of rest following each other continuously and automatically as long as desired. Setting the machine at rest is effected by turning the lever 30 in the direction of the arrow B until the pawl 32 catches the leg 35 whereb the leg 38 of the same ity the interior gearing 39 of the cogwheel 25, so that no further cooperat-ion can take place.

In order to obtain a uniform depth of the holes in spite of the work piece having, perhaps, an irregular surface, the following upper surface of the slide 2 where it is provided with an adjustine ring 10 serving to adjust the rod 8 in heiglit, as well as to adjusta helix 9 surrounding said reduced part of the rod. The slide 2 has a recess containing a double armed lever 11, one arm of which takes into a cavity of the rod 8` and the other arm of which is coupled with a bellcrank lever 12-5 the arm 5 ot' which forms apawl coperating with a lug 13 of the slide 3. The pawl 5 is pressed under said lug 13 by the spring 9. The slide 3 when moving downward causes the pawl 5, or the bellcrank lever 5--12 respectively, and the slide 2 with the spindle 4 and the rod 8, to move in the same direction, the movement of the slide being transmitted to all these parts by the lug 13 of the slide 3, as shown in Fi 1. The lower end 14 of the rod 8 touches t en the upper surfaces of the ieee of work 1, and as the other parts move arther downward, the spring 9 is compressed and finally the levers 11 and 12 are turned, causing thus the pawl 5 to leave the lug 13 of the slide 3 so as to uncouple the slide 2 from it. The slide 3 continues in its downward movement corresponding to the stroke of the connecting rod 7, and on its backward, 2'. e. upward movement a projection 15 of the slide 3 pushes upon the pawl 5 and lifts it together with the slide 2 and the rod 8, and as the spring 9 now is free to expand, it raises the rod 8 and at the same time turns the levers 11 and 12, thus returning all parts to their former position. At any rate the means effecting the feed of the drill are thrown out of gear by the other means before described and it is obvious that the depth of the holes will always be the same, no matter how irregular the surface or configuration of the piece of wood or the like may be.

What I claim as new and desire to secure by Letters Patent is:

1. In a machine for drilling, incisiug or pressing holes of equal depth into irregularly shaped work-pieces by reciprocated tool holders coperating with an intermittently fed working table, the combination of an axle operating means to effect the working movement of the tools, another axle operating'means to effect the feed motion of the work table, two wheels sitting loosely upon said two axles and constantly rotated from a shafting, two disks keyed to said two axles, and means for tem orarily connecting them with said loose wlieels, means provided upon the disk of the tool operating axle and adapted to couple the axle moving` the Work table to its Wheel after the other disk has made one complete rotation, means for intermittently coupling and uneoupling the clutches, and means provided upon the disk of the axle moving the work table and adapted to couple the tool operating axle tio its disk after the other disk has made one complete rotation.

2. In a machine for drilling, ineising or pressing holes of equal depth into irregularly shaped work-pieces by reciprocated tool holders cooper-Mini?r with an intermittently fed Work tahle, the combination of an axle operatingmeans to effect. the working movement of the tools, a second axle operating means to effect the teedmotion of the Work table, two wheels sitting loosely upon said two axles constantly rotated from a shafting, two disks keyed to the said two axles, and means for temporarily connecting them with said loose Wheels, means provided upon the disk of the tool operating axle and adapted to couple the axle moving the work table to its Wheel after the other disk has made one complete rotation, a. hand lever adapted to couple the said tool operatingr axle to itsl disks when turned from its middle position in one direction, and to uneouple said axle and disk when turned 'from said position in the other direction.

In testimony whereof I allix my signature in presence of two witnesses.

ANTON EINICHER. `\`\'itnesses:

FLYS SCHN, .l'onN J. Rox'ro. 

